<template>
	<view class="content">
		<view class="tag-item">
			<!-- <view class="tag-view">
				<text class="tag-text" v-for="(item,index) in tagList" :key="index">{{item.name}}</text>
			</view> -->
			<view class="body-view">
				<scroll-view class="top-menu-view" scroll-x="true" :scroll-left="scrollLeft">
					<block v-for="(menuTab,index) in menuTabs" :key="index">
						<view class="menu-one-view" v-bind:id="'tabNum'+index" @click="swichMenu(index)">
							<view :class="[currentTab==index ? 'menu-one-act' : 'menu-one']">
								<view class="menu-one-txt">{{menuTab.name}}</view>
								<view class="menu-one-bottom">
									<view class="menu-one-bottom-color"></view>
								</view>
							</view>
						</view>
					</block>
				</scroll-view>
			</view>
		</view>
		<view class="content-index">
			<swiper :current="currentTab" class="swiper-box-list" duration="300" @change="swiperChange">
				<block v-for="(swiperDate,index1) in menuTabs" :key="index1">
					<swiper-item>
						<banner></banner>
						<teach></teach>
						<view>
							<text>
								这是首页
							</text>
						</view>
					</swiper-item>
					<swiper-item>
						sdbfksbdfks
					</swiper-item>
				</block>
			</swiper>
			<!-- <banner></banner>
			<teach></teach> -->
		</view>
	</view>
</template>

<script>
import banner from '../../components/index/banner/banner';
import teach from '../../components/index/teach/teach';
	export default {
		components: {
			banner,
			teach,
		},
		data() {
			return {
				title: 'Hello',
				tagList: [
					{
						name: '推荐'
					},{
						name: '名师'
					},{
						name: '早盘'
					},{
						name: '午盘'
					},{
						name: '晚盘'
					},{
						name: '节目'
					},{
						name: '大师课'
					}
				],
				scrollLeft: 0,
				isClickChange: false,
				currentTab: 0,
				menuTabs: [{
						name: '推荐'
					},{
						name: '名师'
					},{
						name: '早盘'
					},{
						name: '午盘'
					},{
						name: '晚盘'
					},{
						name: '节目'
					},{
						name: '大师课'
					}],
				swiperDateList: [[],[],[],[],[],[]]
			}
		},
		onLoad() {
			for (var i = 0; i < this.swiperDateList.length; i++) {
				this.getDateList(i);
			}
		},
		methods: {
			bindClick() {
				console.log('fsdf')
			},
			swichMenu: async function(current) { //点击其中一个 menu
				if (this.currentTab == current) {
					return false;
				} else {
					this.currentTab = current;
					this.setScrollLeft(current);
				}
			},
			swiperChange: async function(e) {
				let index = e.target.current;
				this.setScrollLeft(index);
				this.currentTab = index; 
			},
			setScrollLeft: async function(tabIndex) {
				let leftWidthSum = 0;
				for (var i = 0; i <= tabIndex; i++) {
					let nowElement = await this.getWidth('tabNum' + i);
					leftWidthSum = leftWidthSum + nowElement.width;
				}
				let winWidth = uni.getSystemInfoSync().windowWidth;
				this.scrollLeft = leftWidthSum > winWidth ? (leftWidthSum - winWidth) : 0
			},
			getWidth: function(id) { //得到元素的宽高
				return new Promise((res, rej) => {
					uni.createSelectorQuery().select("#" + id).fields({
						size: true,
						scrollOffset: true
					}, (data) => {
						res(data);
					}).exec();
				})
			},
			loadMore: function(tabIndex) {
				console.log('正在加载更多数据。。。')
				this.getDateList(tabIndex);
			},
			getDateList: function(tabIndex) {
				for (var i = 0; i < 20; i++) {
					var entity = this.menuTabs[tabIndex].name + (this.swiperDateList[tabIndex].length);
					this.swiperDateList[tabIndex].push(entity);
				}
			}
		}
	}
</script>

<style>
	/* .content {
		height: 100%;
	} */
	.content-index {
		width: 678upx;
		height: 100%;
		margin: 0 auto;
	}
	.tag-item {
		width: 100%;
		height: 88upx;
		position: sticky;
		top: 0;
		z-index: 1000;
	}
	.body-view {
		display: flex;
		flex: 1;
		flex-direction: column;
		overflow: hidden;
		/* height: 100%; */
		width: 100%;
		align-items: flex-start;
		justify-content: center;
	}
 
	.top-menu-view {
		display: flex;
		white-space: nowrap;
		width: 100%;
		background-color: #FFFFFF;
		height: 88upx;
		/* 在这里设置导航条高度 */
	}
 
	.top-menu-view .menu-one-view {
		display: inline-block;
		white-space: nowrap;
		height: 100%;
	}
 
	.top-menu-view .menu-one-view .menu-one {
		/* 在这里写 单个按钮样式 */
		margin-left: 25upx;
		margin-right: 25upx;
		position: relative;
		height: 100%;
		display: flex;
		align-items: center;
		justify-content: center;
	}
 
	.top-menu-view .menu-one-view .menu-one .menu-one-txt {
		height: 40upx;
		font-size: 28upx;
		font-weight: 400;
		color: rgba(154, 154, 154, 1);
		line-height: 40upx;
	}
 
	.top-menu-view .menu-one-view .menu-one .menu-one-bottom {
		position: absolute;
		bottom: 0;
		width: 100%;
	}
 
	.top-menu-view .menu-one-view .menu-one .menu-one-bottom .menu-one-bottom-color {
		width: 60%;
		height: 4upx;
	}
 
	.top-menu-view .menu-one-view .menu-one-act {
		/* 在这里写 单个按钮样式 */
		margin-left: 25upx;
		margin-right: 25upx;
		position: relative;
		height: 100%;
		display: flex;
		align-items: center;
		justify-content: center;
	}
 
	.top-menu-view .menu-one-view .menu-one-act .menu-one-txt {
		height: 40upx;
		font-size: 28upx;
		font-weight: 400;
		color: rgba(0, 170, 255, 1);
		line-height: 40upx;
	}
 
	.top-menu-view .menu-one-view .menu-one-act .menu-one-bottom {
		position: absolute;
		bottom: 0;
		width: 100%;
		display: flex;
		justify-content: center;
	}
 
	.top-menu-view .menu-one-view .menu-one-act .menu-one-bottom .menu-one-bottom-color {
		width: 60%;
		height: 4upx;
		background: rgba(0, 170, 255, 1);
	}
 
	.swiper-box-list {
		flex: 1;
		width: 100%;
		/* height: 100%; */
		/* height: auto; */
		background-color: #FFFFFF;
	}
 
	.swiper-one-list {
		height: 100%;
		width: 100%;
	}
 
	.swiper-one-list .swiper-list-entity {
		width: 100%;
		height: 112upx;
		text-align: center;
		display: flex;
		flex-wrap: wrap;
		align-items: center;
		justify-content: center;
	}
</style>
